1.

Which is the Symbol used for well graded gravel as per ISC System of classification?1. W2. WG3. G4. GW

Answer» Correct Answer - Option 4 : GW

Concept-

According to IS Classification system, the soils can be classified into 18 groups.

Soil classification using group symbols is as follows:

Group Symbol

Classification

Coarse soils

GW

Well-graded GRAVEL

GP

Poorly-graded GRAVEL

GM

Silty GRAVEL

GC

Clayey GRAVEL

 

SW

Well-graded SAND

SP

Poorly-graded SAND

SM

Silty SAND

SC

Clayey SAND

 

Fine soils

ML

SILT of low plasticity

MI

SILT of intermediate plasticity

MH

SILT of high plasticity

 

CL

CLAY of low plasticity

CI

CLAY of intermediate plasticity

CH

CLAY of high plasticity

 

OL

Organic soil of low plasticity

OI

Organic soil of intermediate plasticity

OH

Organic soil of high plasticity

 

Pt

Peat



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